R&S FSH
Digital Modulation Analyzer
Measurements on CDMA2000 Signals
Operating Manual 1173.6275.12 - 30
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Trigger
Shows the current trigger mode.
For more information see "
Working with Trigger Functionality
In addition to the trigger also available with the base unit, the application also feature a
GPS Sync trigger. It triggers measurements on synchronization with the base station.
Base SF
Shows the current Base Spreading factor (Base SF).
For more information see "
Setting the Base Spreading Factor
9.5.1.2 Global Results
Global results contain various measurement results of the composite signal. These
results evaluate the total signal over the period of one Power Control Group (PCG).
Channel Power
Total power of the signal in dBm in the 1.23 MHz bandwidth around the center
frequency.
Rho
According to the CDMA2000 standard, Rho is the normalized, correlated power
between the measured and the ideally generated reference signal. When you measure
Rho, the CDMA2000 standard requires that only the pilot channel be supplied.
Composite EVM
Shows the composite Error Vector Magnitude (EVM) in %. The EVM is the root of the
ratio of the mean error power (root mean square) to the power of an ideally generated
reference signal.
An EVM of 0 % means a perfect signal.
Carrier Frequency Error
Shows the frequency error in relation to the current center frequency of the R&S FSH.
For more information see "
Selecting the Unit of the Carrier Frequency Error
" on page
Concerning uncertainty of the reference frequency of the GPS receiver, refer to the
data sheet.
Peak to Average
Shows the difference between the peak power and the average power of the signal
(crest factor).
